Rockruff can possess one of two abilities; Keen Eye, which prevents the loss of Accuracy, or Vital Spirit, which prevents the Pokémon from obtaining the Sleep status. Its Hidden Ability is Steadfast, which raises its Speed stat by one stage each time the Pokémon flinches.

Rockruff evolves into Lycanroc Midday Form when it reaches Level 25 during the day in Pokémon Sun, or Lycanroc Midnight Form when it reaches Level 25 during the night in Pokémon Moon.

Rockruff is in the Field Egg Group. It takes Rockruff 1,000,000 Experience Points to reach Level 100.